（自動詞）ている te iru
（自動詞）ている（te iru）means “be in a state (result of an intransitive change)”. With an intransitive verb of change (開く, 閉まる, つく, 消える, 壊れる, 落ちる…), て + いる does NOT mean an action in progress; it describes the resulting state that remains. Formation: V自動詞-て + いる
be in a state (result of an intransitive change)
N4Formation
V自動詞-て + いる
Explanation
With an intransitive verb of change (開く, 閉まる, つく, 消える, 壊れる, 落ちる…), て + いる does NOT mean an action in progress; it describes the resulting state that remains. 窓が開いている = the window is (standing) open. Compare the transitive pattern 〜てある, which describes a state someone deliberately set up.
Examples
Note
Don't confuse with ている on a continuous action verb (食べている = is eating). The state reading appears with momentary change verbs. Transitive counterpart: 窓が開けてある (someone opened it on purpose) vs 窓が開いている (it is simply open).
FAQ
（自動詞）ている — what does it mean and how is it used?
be in a state (result of an intransitive change). With an intransitive verb of change (開く, 閉まる, つく, 消える, 壊れる, 落ちる…), て + いる does NOT mean an action in progress; it describes the resulting state that remains. 窓が開いている = the window is (standing) open. Compare the transitive pattern 〜てある, which describes a state someone deliberately set up.
（自動詞）ている — how do you form it?
V自動詞-て + いる
（自動詞）ている — any usage notes?
Don't confuse with ている on a continuous action verb (食べている = is eating). The state reading appears with momentary change verbs. Transitive counterpart: 窓が開けてある (someone opened it on purpose) vs 窓が開いている (it is simply open).